cosinen.[数]余弦Cosine basis neural network余弦基神经网络cosine vector included angle向量夹角余弦cosine similarity clustering余弦相似度cosine modulated filter banks余弦调制滤波器组cosine modulation filter banks余弦调制滤波器组Cosine-modulated filterbanks余弦调制滤波器组cosine roll off characteristic余弦滑移特性cosine torsional vibration horn余弦型扭转振动变幅杆cosine square function partition余弦平方函数划分cosine - modulated filter banks余弦调制滤波器组